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<pre><span class="sourceLineNo">001</span>/* ===========================================================<a name="line.1"></a>
<span class="sourceLineNo">002</span> * JFreeChart : a free chart library for the Java(tm) platform<a name="line.2"></a>
<span class="sourceLineNo">003</span> * ===========================================================<a name="line.3"></a>
<span class="sourceLineNo">004</span> *<a name="line.4"></a>
<span class="sourceLineNo">005</span> * (C) Copyright 2000-2014, by Object Refinery Limited and Contributors.<a name="line.5"></a>
<span class="sourceLineNo">006</span> *<a name="line.6"></a>
<span class="sourceLineNo">007</span> * Project Info:  http://www.jfree.org/jfreechart/index.html<a name="line.7"></a>
<span class="sourceLineNo">008</span> *<a name="line.8"></a>
<span class="sourceLineNo">009</span> * This library is free software; you can redistribute it and/or modify it<a name="line.9"></a>
<span class="sourceLineNo">010</span> * under the terms of the GNU Lesser General Public License as published by<a name="line.10"></a>
<span class="sourceLineNo">011</span> * the Free Software Foundation; either version 2.1 of the License, or<a name="line.11"></a>
<span class="sourceLineNo">012</span> * (at your option) any later version.<a name="line.12"></a>
<span class="sourceLineNo">013</span> *<a name="line.13"></a>
<span class="sourceLineNo">014</span> * This library is distributed in the hope that it will be useful, but<a name="line.14"></a>
<span class="sourceLineNo">015</span> * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY<a name="line.15"></a>
<span class="sourceLineNo">016</span> * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public<a name="line.16"></a>
<span class="sourceLineNo">017</span> * License for more details.<a name="line.17"></a>
<span class="sourceLineNo">018</span> *<a name="line.18"></a>
<span class="sourceLineNo">019</span> * You should have received a copy of the GNU Lesser General Public<a name="line.19"></a>
<span class="sourceLineNo">020</span> * License along with this library; if not, write to the Free Software<a name="line.20"></a>
<span class="sourceLineNo">021</span> * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,<a name="line.21"></a>
<span class="sourceLineNo">022</span> * USA.<a name="line.22"></a>
<span class="sourceLineNo">023</span> *<a name="line.23"></a>
<span class="sourceLineNo">024</span> * [Oracle and Java are registered trademarks of Oracle and/or its affiliates. <a name="line.24"></a>
<span class="sourceLineNo">025</span> * Other names may be trademarks of their respective owners.]<a name="line.25"></a>
<span class="sourceLineNo">026</span> *<a name="line.26"></a>
<span class="sourceLineNo">027</span> * ----------------<a name="line.27"></a>
<span class="sourceLineNo">028</span> * ChartCanvas.java<a name="line.28"></a>
<span class="sourceLineNo">029</span> * ----------------<a name="line.29"></a>
<span class="sourceLineNo">030</span> * (C) Copyright 2014, by Object Refinery Limited and Contributors.<a name="line.30"></a>
<span class="sourceLineNo">031</span> *<a name="line.31"></a>
<span class="sourceLineNo">032</span> * Original Author:  David Gilbert (for Object Refinery Limited);<a name="line.32"></a>
<span class="sourceLineNo">033</span> * Contributor(s):   -;<a name="line.33"></a>
<span class="sourceLineNo">034</span> *<a name="line.34"></a>
<span class="sourceLineNo">035</span> * Changes:<a name="line.35"></a>
<span class="sourceLineNo">036</span> * --------<a name="line.36"></a>
<span class="sourceLineNo">037</span> * 25-Jun-2014 : Version 1 (DG);<a name="line.37"></a>
<span class="sourceLineNo">038</span> *<a name="line.38"></a>
<span class="sourceLineNo">039</span> */<a name="line.39"></a>
<span class="sourceLineNo">040</span><a name="line.40"></a>
<span class="sourceLineNo">041</span>package org.jfree.chart.fx;<a name="line.41"></a>
<span class="sourceLineNo">042</span><a name="line.42"></a>
<span class="sourceLineNo">043</span>import java.awt.Graphics2D;<a name="line.43"></a>
<span class="sourceLineNo">044</span>import java.awt.Rectangle;<a name="line.44"></a>
<span class="sourceLineNo">045</span>import java.awt.geom.Point2D;<a name="line.45"></a>
<span class="sourceLineNo">046</span>import java.awt.geom.Rectangle2D;<a name="line.46"></a>
<span class="sourceLineNo">047</span>import java.util.ArrayList;<a name="line.47"></a>
<span class="sourceLineNo">048</span>import java.util.List;<a name="line.48"></a>
<span class="sourceLineNo">049</span>import javafx.scene.canvas.Canvas;<a name="line.49"></a>
<span class="sourceLineNo">050</span>import javafx.scene.control.Tooltip;<a name="line.50"></a>
<span class="sourceLineNo">051</span>import javafx.scene.input.MouseEvent;<a name="line.51"></a>
<span class="sourceLineNo">052</span>import javafx.scene.input.ScrollEvent;<a name="line.52"></a>
<span class="sourceLineNo">053</span>import org.jfree.chart.ChartMouseEvent;<a name="line.53"></a>
<span class="sourceLineNo">054</span>import org.jfree.chart.ChartRenderingInfo;<a name="line.54"></a>
<span class="sourceLineNo">055</span>import org.jfree.chart.JFreeChart;<a name="line.55"></a>
<span class="sourceLineNo">056</span>import org.jfree.chart.entity.ChartEntity;<a name="line.56"></a>
<span class="sourceLineNo">057</span>import org.jfree.chart.event.ChartChangeEvent;<a name="line.57"></a>
<span class="sourceLineNo">058</span>import org.jfree.chart.event.ChartChangeListener;<a name="line.58"></a>
<span class="sourceLineNo">059</span>import org.jfree.chart.fx.interaction.AnchorHandlerFX;<a name="line.59"></a>
<span class="sourceLineNo">060</span>import org.jfree.chart.fx.interaction.DispatchHandlerFX;<a name="line.60"></a>
<span class="sourceLineNo">061</span>import org.jfree.chart.fx.interaction.ChartMouseEventFX;<a name="line.61"></a>
<span class="sourceLineNo">062</span>import org.jfree.chart.fx.interaction.ChartMouseListenerFX;<a name="line.62"></a>
<span class="sourceLineNo">063</span>import org.jfree.chart.fx.interaction.TooltipHandlerFX;<a name="line.63"></a>
<span class="sourceLineNo">064</span>import org.jfree.chart.fx.interaction.ScrollHandlerFX;<a name="line.64"></a>
<span class="sourceLineNo">065</span>import org.jfree.chart.fx.interaction.PanHandlerFX;<a name="line.65"></a>
<span class="sourceLineNo">066</span>import org.jfree.chart.fx.interaction.MouseHandlerFX;<a name="line.66"></a>
<span class="sourceLineNo">067</span>import org.jfree.chart.plot.PlotRenderingInfo;<a name="line.67"></a>
<span class="sourceLineNo">068</span>import org.jfree.chart.util.ParamChecks;<a name="line.68"></a>
<span class="sourceLineNo">069</span><a name="line.69"></a>
<span class="sourceLineNo">070</span>/**<a name="line.70"></a>
<span class="sourceLineNo">071</span> * A canvas for displaying a {@link JFreeChart} in JavaFX.  You can use the<a name="line.71"></a>
<span class="sourceLineNo">072</span> * canvas directly to display charts, but usually the {@link ChartViewer}<a name="line.72"></a>
<span class="sourceLineNo">073</span> * class (which embeds a canvas) is a better option.<a name="line.73"></a>
<span class="sourceLineNo">074</span> * &lt;p&gt;<a name="line.74"></a>
<span class="sourceLineNo">075</span> * The canvas installs several default mouse handlers, if you don't like the<a name="line.75"></a>
<span class="sourceLineNo">076</span> * behaviour provided by these you can retrieve the handler by ID and<a name="line.76"></a>
<span class="sourceLineNo">077</span> * disable or remove it (the IDs are "tooltip", "scroll", "anchor", "pan" and <a name="line.77"></a>
<span class="sourceLineNo">078</span> * "dispatch").<a name="line.78"></a>
<span class="sourceLineNo">079</span> * <a name="line.79"></a>
<span class="sourceLineNo">080</span> * &lt;p&gt;THE API FOR THIS CLASS IS SUBJECT TO CHANGE IN FUTURE RELEASES.  This is<a name="line.80"></a>
<span class="sourceLineNo">081</span> * so that we can incorporate feedback on the (new) JavaFX support in <a name="line.81"></a>
<span class="sourceLineNo">082</span> * JFreeChart.&lt;/p&gt;<a name="line.82"></a>
<span class="sourceLineNo">083</span> * <a name="line.83"></a>
<span class="sourceLineNo">084</span> * @since 1.0.18<a name="line.84"></a>
<span class="sourceLineNo">085</span> */<a name="line.85"></a>
<span class="sourceLineNo">086</span>public class ChartCanvas extends Canvas implements ChartChangeListener {<a name="line.86"></a>
<span class="sourceLineNo">087</span>    <a name="line.87"></a>
<span class="sourceLineNo">088</span>    /** The chart being displayed in the canvas (never null). */<a name="line.88"></a>
<span class="sourceLineNo">089</span>    private JFreeChart chart;<a name="line.89"></a>
<span class="sourceLineNo">090</span>    <a name="line.90"></a>
<span class="sourceLineNo">091</span>    /**<a name="line.91"></a>
<span class="sourceLineNo">092</span>     * The graphics drawing context (will be an instance of FXGraphics2D).<a name="line.92"></a>
<span class="sourceLineNo">093</span>     */<a name="line.93"></a>
<span class="sourceLineNo">094</span>    private Graphics2D g2;<a name="line.94"></a>
<span class="sourceLineNo">095</span>   <a name="line.95"></a>
<span class="sourceLineNo">096</span>    /** <a name="line.96"></a>
<span class="sourceLineNo">097</span>     * The anchor point (can be null) is usually updated to reflect the most <a name="line.97"></a>
<span class="sourceLineNo">098</span>     * recent mouse click and is used during chart rendering to update <a name="line.98"></a>
<span class="sourceLineNo">099</span>     * crosshairs belonging to the chart.  <a name="line.99"></a>
<span class="sourceLineNo">100</span>     */<a name="line.100"></a>
<span class="sourceLineNo">101</span>    private Point2D anchor;<a name="line.101"></a>
<span class="sourceLineNo">102</span>    <a name="line.102"></a>
<span class="sourceLineNo">103</span>    /** The chart rendering info from the most recent drawing of the chart. */<a name="line.103"></a>
<span class="sourceLineNo">104</span>    private ChartRenderingInfo info;<a name="line.104"></a>
<span class="sourceLineNo">105</span>    <a name="line.105"></a>
<span class="sourceLineNo">106</span>    /** The tooltip object for the canvas (can be null). */<a name="line.106"></a>
<span class="sourceLineNo">107</span>    private Tooltip tooltip;<a name="line.107"></a>
<span class="sourceLineNo">108</span>    <a name="line.108"></a>
<span class="sourceLineNo">109</span>    /** <a name="line.109"></a>
<span class="sourceLineNo">110</span>     * A flag that controls whether or not tooltips will be generated from the<a name="line.110"></a>
<span class="sourceLineNo">111</span>     * chart as the mouse pointer moves over it.<a name="line.111"></a>
<span class="sourceLineNo">112</span>     */<a name="line.112"></a>
<span class="sourceLineNo">113</span>    private boolean tooltipEnabled;<a name="line.113"></a>
<span class="sourceLineNo">114</span>    <a name="line.114"></a>
<span class="sourceLineNo">115</span>    /** Storage for registered chart mouse listeners. */<a name="line.115"></a>
<span class="sourceLineNo">116</span>    private transient List&lt;ChartMouseListenerFX&gt; chartMouseListeners;<a name="line.116"></a>
<span class="sourceLineNo">117</span><a name="line.117"></a>
<span class="sourceLineNo">118</span>    /** The current live handler (can be null). */<a name="line.118"></a>
<span class="sourceLineNo">119</span>    private MouseHandlerFX liveHandler;<a name="line.119"></a>
<span class="sourceLineNo">120</span>    <a name="line.120"></a>
<span class="sourceLineNo">121</span>    /** <a name="line.121"></a>
<span class="sourceLineNo">122</span>     * The list of available live mouse handlers (can be empty but not null). <a name="line.122"></a>
<span class="sourceLineNo">123</span>     */<a name="line.123"></a>
<span class="sourceLineNo">124</span>    private List&lt;MouseHandlerFX&gt; availableMouseHandlers;<a name="line.124"></a>
<span class="sourceLineNo">125</span>    <a name="line.125"></a>
<span class="sourceLineNo">126</span>    /** The auxiliary mouse handlers (can be empty but not null). */<a name="line.126"></a>
<span class="sourceLineNo">127</span>    private List&lt;MouseHandlerFX&gt; auxiliaryMouseHandlers;<a name="line.127"></a>
<span class="sourceLineNo">128</span>    <a name="line.128"></a>
<span class="sourceLineNo">129</span>    /**<a name="line.129"></a>
<span class="sourceLineNo">130</span>     * Creates a new canvas to display the supplied chart in JavaFX.<a name="line.130"></a>
<span class="sourceLineNo">131</span>     * <a name="line.131"></a>
<span class="sourceLineNo">132</span>     * @param chart  the chart ({@code null} not permitted). <a name="line.132"></a>
<span class="sourceLineNo">133</span>     */<a name="line.133"></a>
<span class="sourceLineNo">134</span>    public ChartCanvas(JFreeChart chart) {<a name="line.134"></a>
<span class="sourceLineNo">135</span>        ParamChecks.nullNotPermitted(chart, "chart");<a name="line.135"></a>
<span class="sourceLineNo">136</span>        this.chart = chart;<a name="line.136"></a>
<span class="sourceLineNo">137</span>        this.chart.addChangeListener(this);<a name="line.137"></a>
<span class="sourceLineNo">138</span>        this.tooltip = null;<a name="line.138"></a>
<span class="sourceLineNo">139</span>        this.tooltipEnabled = true;<a name="line.139"></a>
<span class="sourceLineNo">140</span>        this.chartMouseListeners = new ArrayList&lt;ChartMouseListenerFX&gt;();<a name="line.140"></a>
<span class="sourceLineNo">141</span>        <a name="line.141"></a>
<span class="sourceLineNo">142</span>        widthProperty().addListener(evt -&gt; draw());<a name="line.142"></a>
<span class="sourceLineNo">143</span>        heightProperty().addListener(evt -&gt; draw());<a name="line.143"></a>
<span class="sourceLineNo">144</span>        this.g2 = new FXGraphics2D(getGraphicsContext2D());<a name="line.144"></a>
<span class="sourceLineNo">145</span>        this.liveHandler = null;<a name="line.145"></a>
<span class="sourceLineNo">146</span>        this.availableMouseHandlers = new ArrayList&lt;MouseHandlerFX&gt;();<a name="line.146"></a>
<span class="sourceLineNo">147</span>        <a name="line.147"></a>
<span class="sourceLineNo">148</span>        this.availableMouseHandlers.add(new PanHandlerFX("pan", true, false, <a name="line.148"></a>
<span class="sourceLineNo">149</span>                false, false));<a name="line.149"></a>
<span class="sourceLineNo">150</span> <a name="line.150"></a>
<span class="sourceLineNo">151</span>        this.auxiliaryMouseHandlers = new ArrayList&lt;MouseHandlerFX&gt;();<a name="line.151"></a>
<span class="sourceLineNo">152</span>        this.auxiliaryMouseHandlers.add(new TooltipHandlerFX("tooltip"));<a name="line.152"></a>
<span class="sourceLineNo">153</span>        this.auxiliaryMouseHandlers.add(new ScrollHandlerFX("scroll"));<a name="line.153"></a>
<span class="sourceLineNo">154</span>        this.auxiliaryMouseHandlers.add(new AnchorHandlerFX("anchor"));<a name="line.154"></a>
<span class="sourceLineNo">155</span>        this.auxiliaryMouseHandlers.add(new DispatchHandlerFX("dispatch"));<a name="line.155"></a>
<span class="sourceLineNo">156</span>        <a name="line.156"></a>
<span class="sourceLineNo">157</span>        setOnMouseMoved((MouseEvent e) -&gt; { handleMouseMoved(e); });<a name="line.157"></a>
<span class="sourceLineNo">158</span>        setOnMouseClicked((MouseEvent e) -&gt; { handleMouseClicked(e); });<a name="line.158"></a>
<span class="sourceLineNo">159</span>        setOnMousePressed((MouseEvent e) -&gt; { handleMousePressed(e); });<a name="line.159"></a>
<span class="sourceLineNo">160</span>        setOnMouseDragged((MouseEvent e) -&gt; { handleMouseDragged(e); });<a name="line.160"></a>
<span class="sourceLineNo">161</span>        setOnMouseReleased((MouseEvent e) -&gt; { handleMouseReleased(e); });<a name="line.161"></a>
<span class="sourceLineNo">162</span>        setOnScroll((ScrollEvent event) -&gt; { handleScroll(event); });<a name="line.162"></a>
<span class="sourceLineNo">163</span>    }<a name="line.163"></a>
<span class="sourceLineNo">164</span>    <a name="line.164"></a>
<span class="sourceLineNo">165</span>    /**<a name="line.165"></a>
<span class="sourceLineNo">166</span>     * Returns the chart that is being displayed by this node.<a name="line.166"></a>
<span class="sourceLineNo">167</span>     * <a name="line.167"></a>
<span class="sourceLineNo">168</span>     * @return The chart (never {@code null}). <a name="line.168"></a>
<span class="sourceLineNo">169</span>     */<a name="line.169"></a>
<span class="sourceLineNo">170</span>    public JFreeChart getChart() {<a name="line.170"></a>
<span class="sourceLineNo">171</span>        return this.chart;<a name="line.171"></a>
<span class="sourceLineNo">172</span>    }<a name="line.172"></a>
<span class="sourceLineNo">173</span>    <a name="line.173"></a>
<span class="sourceLineNo">174</span>    /**<a name="line.174"></a>
<span class="sourceLineNo">175</span>     * Sets the chart to be displayed by this node.<a name="line.175"></a>
<span class="sourceLineNo">176</span>     * <a name="line.176"></a>
<span class="sourceLineNo">177</span>     * @param chart  the chart ({@code null} not permitted). <a name="line.177"></a>
<span class="sourceLineNo">178</span>     */<a name="line.178"></a>
<span class="sourceLineNo">179</span>    public void setChart(JFreeChart chart) {<a name="line.179"></a>
<span class="sourceLineNo">180</span>        ParamChecks.nullNotPermitted(chart, "chart");<a name="line.180"></a>
<span class="sourceLineNo">181</span>        this.chart.removeChangeListener(this);<a name="line.181"></a>
<span class="sourceLineNo">182</span>        this.chart = chart;<a name="line.182"></a>
<span class="sourceLineNo">183</span>        this.chart.addChangeListener(this);<a name="line.183"></a>
<span class="sourceLineNo">184</span>        draw();<a name="line.184"></a>
<span class="sourceLineNo">185</span>    }<a name="line.185"></a>
<span class="sourceLineNo">186</span>    <a name="line.186"></a>
<span class="sourceLineNo">187</span>    /**<a name="line.187"></a>
<span class="sourceLineNo">188</span>     * Returns the rendering info from the most recent drawing of the chart.<a name="line.188"></a>
<span class="sourceLineNo">189</span>     * <a name="line.189"></a>
<span class="sourceLineNo">190</span>     * @return The rendering info (possibly {@code null}). <a name="line.190"></a>
<span class="sourceLineNo">191</span>     */<a name="line.191"></a>
<span class="sourceLineNo">192</span>    public ChartRenderingInfo getRenderingInfo() {<a name="line.192"></a>
<span class="sourceLineNo">193</span>        return this.info;<a name="line.193"></a>
<span class="sourceLineNo">194</span>    }<a name="line.194"></a>
<span class="sourceLineNo">195</span><a name="line.195"></a>
<span class="sourceLineNo">196</span>    /**<a name="line.196"></a>
<span class="sourceLineNo">197</span>     * Returns the flag that controls whether or not tooltips are enabled.  <a name="line.197"></a>
<span class="sourceLineNo">198</span>     * The default value is {@code true}.  The {@link TooltipHandlerFX} <a name="line.198"></a>
<span class="sourceLineNo">199</span>     * class will only update the tooltip if this flag is set to <a name="line.199"></a>
<span class="sourceLineNo">200</span>     * {@code true}.<a name="line.200"></a>
<span class="sourceLineNo">201</span>     * <a name="line.201"></a>
<span class="sourceLineNo">202</span>     * @return The flag. <a name="line.202"></a>
<span class="sourceLineNo">203</span>     */<a name="line.203"></a>
<span class="sourceLineNo">204</span>    public boolean isTooltipEnabled() {<a name="line.204"></a>
<span class="sourceLineNo">205</span>        return this.tooltipEnabled;<a name="line.205"></a>
<span class="sourceLineNo">206</span>    }<a name="line.206"></a>
<span class="sourceLineNo">207</span><a name="line.207"></a>
<span class="sourceLineNo">208</span>    /**<a name="line.208"></a>
<span class="sourceLineNo">209</span>     * Sets the flag that controls whether or not tooltips are enabled.<a name="line.209"></a>
<span class="sourceLineNo">210</span>     * <a name="line.210"></a>
<span class="sourceLineNo">211</span>     * @param tooltipEnabled  the new flag value. <a name="line.211"></a>
<span class="sourceLineNo">212</span>     */<a name="line.212"></a>
<span class="sourceLineNo">213</span>    public void setTooltipEnabled(boolean tooltipEnabled) {<a name="line.213"></a>
<span class="sourceLineNo">214</span>        this.tooltipEnabled = tooltipEnabled;<a name="line.214"></a>
<span class="sourceLineNo">215</span>    }<a name="line.215"></a>
<span class="sourceLineNo">216</span>    <a name="line.216"></a>
<span class="sourceLineNo">217</span>    /**<a name="line.217"></a>
<span class="sourceLineNo">218</span>     * Set the anchor point and forces a redraw of the chart (the anchor point<a name="line.218"></a>
<span class="sourceLineNo">219</span>     * is used to determine the position of the crosshairs on the chart, if<a name="line.219"></a>
<span class="sourceLineNo">220</span>     * they are visible).<a name="line.220"></a>
<span class="sourceLineNo">221</span>     * <a name="line.221"></a>
<span class="sourceLineNo">222</span>     * @param anchor  the anchor ({@code null} permitted). <a name="line.222"></a>
<span class="sourceLineNo">223</span>     */<a name="line.223"></a>
<span class="sourceLineNo">224</span>    public void setAnchor(Point2D anchor) {<a name="line.224"></a>
<span class="sourceLineNo">225</span>        this.anchor = anchor;<a name="line.225"></a>
<span class="sourceLineNo">226</span>        this.chart.setNotify(true);  // force a redraw<a name="line.226"></a>
<span class="sourceLineNo">227</span>    }<a name="line.227"></a>
<span class="sourceLineNo">228</span><a name="line.228"></a>
<span class="sourceLineNo">229</span>    /**<a name="line.229"></a>
<span class="sourceLineNo">230</span>     * Registers a listener to receive {@link ChartMouseEvent} notifications.<a name="line.230"></a>
<span class="sourceLineNo">231</span>     *<a name="line.231"></a>
<span class="sourceLineNo">232</span>     * @param listener  the listener ({@code null} not permitted).<a name="line.232"></a>
<span class="sourceLineNo">233</span>     */<a name="line.233"></a>
<span class="sourceLineNo">234</span>    public void addChartMouseListener(ChartMouseListenerFX listener) {<a name="line.234"></a>
<span class="sourceLineNo">235</span>        ParamChecks.nullNotPermitted(listener, "listener");<a name="line.235"></a>
<span class="sourceLineNo">236</span>        this.chartMouseListeners.add(listener);<a name="line.236"></a>
<span class="sourceLineNo">237</span>    }<a name="line.237"></a>
<span class="sourceLineNo">238</span><a name="line.238"></a>
<span class="sourceLineNo">239</span>    /**<a name="line.239"></a>
<span class="sourceLineNo">240</span>     * Removes a listener from the list of objects listening for chart mouse<a name="line.240"></a>
<span class="sourceLineNo">241</span>     * events.<a name="line.241"></a>
<span class="sourceLineNo">242</span>     *<a name="line.242"></a>
<span class="sourceLineNo">243</span>     * @param listener  the listener.<a name="line.243"></a>
<span class="sourceLineNo">244</span>     */<a name="line.244"></a>
<span class="sourceLineNo">245</span>    public void removeChartMouseListener(ChartMouseListenerFX listener) {<a name="line.245"></a>
<span class="sourceLineNo">246</span>        this.chartMouseListeners.remove(listener);<a name="line.246"></a>
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<span class="sourceLineNo">248</span>    <a name="line.248"></a>
<span class="sourceLineNo">249</span>    /**<a name="line.249"></a>
<span class="sourceLineNo">250</span>     * Returns the mouse handler with the specified ID, or {@code null} if<a name="line.250"></a>
<span class="sourceLineNo">251</span>     * there is no handler with that ID.  This method will look for handlers<a name="line.251"></a>
<span class="sourceLineNo">252</span>     * in both the regular and auxiliary handler lists.<a name="line.252"></a>
<span class="sourceLineNo">253</span>     * <a name="line.253"></a>
<span class="sourceLineNo">254</span>     * @param id  the ID ({@code null} not permitted).<a name="line.254"></a>
<span class="sourceLineNo">255</span>     * <a name="line.255"></a>
<span class="sourceLineNo">256</span>     * @return The handler with the specified ID <a name="line.256"></a>
<span class="sourceLineNo">257</span>     */<a name="line.257"></a>
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<span class="sourceLineNo">273</span>     * Adds a mouse handler to the list of available handlers (handlers that<a name="line.273"></a>
<span class="sourceLineNo">274</span>     * are candidates to take the position of live handler).  The handler must<a name="line.274"></a>
<span class="sourceLineNo">275</span>     * have an ID that uniquely identifies it amongst the handlers registered<a name="line.275"></a>
<span class="sourceLineNo">276</span>     * with this canvas.<a name="line.276"></a>
<span class="sourceLineNo">277</span>     * <a name="line.277"></a>
<span class="sourceLineNo">278</span>     * @param handler  the handler ({@code null} not permitted). <a name="line.278"></a>
<span class="sourceLineNo">279</span>     */<a name="line.279"></a>
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<span class="sourceLineNo">282</span>            throw new IllegalArgumentException(<a name="line.282"></a>
<span class="sourceLineNo">283</span>                    "There is already a handler with that ID (" <a name="line.283"></a>
<span class="sourceLineNo">284</span>                            + handler.getID() + ").");<a name="line.284"></a>
<span class="sourceLineNo">285</span>        }<a name="line.285"></a>
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<span class="sourceLineNo">287</span>    }<a name="line.287"></a>
<span class="sourceLineNo">288</span>    <a name="line.288"></a>
<span class="sourceLineNo">289</span>    /**<a name="line.289"></a>
<span class="sourceLineNo">290</span>     * Removes a handler from the list of available handlers.<a name="line.290"></a>
<span class="sourceLineNo">291</span>     * <a name="line.291"></a>
<span class="sourceLineNo">292</span>     * @param handler  the handler ({@code null} not permitted). <a name="line.292"></a>
<span class="sourceLineNo">293</span>     */<a name="line.293"></a>
<span class="sourceLineNo">294</span>    public void removeMouseHandler(MouseHandlerFX handler) {<a name="line.294"></a>
<span class="sourceLineNo">295</span>        this.availableMouseHandlers.remove(handler);<a name="line.295"></a>
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<span class="sourceLineNo">297</span><a name="line.297"></a>
<span class="sourceLineNo">298</span>    /**<a name="line.298"></a>
<span class="sourceLineNo">299</span>     * Validates that the specified handler has an ID that uniquely identifies <a name="line.299"></a>
<span class="sourceLineNo">300</span>     * it amongst the existing handlers for this canvas.<a name="line.300"></a>
<span class="sourceLineNo">301</span>     * <a name="line.301"></a>
<span class="sourceLineNo">302</span>     * @param handler  the handler ({@code null} not permitted).<a name="line.302"></a>
<span class="sourceLineNo">303</span>     * <a name="line.303"></a>
<span class="sourceLineNo">304</span>     * @return A boolean.<a name="line.304"></a>
<span class="sourceLineNo">305</span>     */<a name="line.305"></a>
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<span class="sourceLineNo">321</span>     * Clears the current live handler.  This method is intended for use by the<a name="line.321"></a>
<span class="sourceLineNo">322</span>     * handlers themselves, you should not call it directly.<a name="line.322"></a>
<span class="sourceLineNo">323</span>     */<a name="line.323"></a>
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<span class="sourceLineNo">329</span>     * Draws the content of the canvas and updates the <a name="line.329"></a>
<span class="sourceLineNo">330</span>     * {@code renderingInfo} attribute with the latest rendering <a name="line.330"></a>
<span class="sourceLineNo">331</span>     * information.<a name="line.331"></a>
<span class="sourceLineNo">332</span>     */<a name="line.332"></a>
<span class="sourceLineNo">333</span>    public final void draw() {<a name="line.333"></a>
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<span class="sourceLineNo">335</span>        double width = getWidth();<a name="line.335"></a>
<span class="sourceLineNo">336</span>        double height = getHeight();<a name="line.336"></a>
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<span class="sourceLineNo">338</span>            this.info = new ChartRenderingInfo();<a name="line.338"></a>
<span class="sourceLineNo">339</span>            this.chart.draw(this.g2, new Rectangle((int) width, (int) height), <a name="line.339"></a>
<span class="sourceLineNo">340</span>                    this.anchor, this.info);<a name="line.340"></a>
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<span class="sourceLineNo">342</span>        getGraphicsContext2D().restore();<a name="line.342"></a>
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<span class="sourceLineNo">345</span> <a name="line.345"></a>
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<span class="sourceLineNo">347</span>     * Returns the data area (the area inside the axes) for the plot or subplot.<a name="line.347"></a>
<span class="sourceLineNo">348</span>     *<a name="line.348"></a>
<span class="sourceLineNo">349</span>     * @param point  the selection point (for subplot selection).<a name="line.349"></a>
<span class="sourceLineNo">350</span>     *<a name="line.350"></a>
<span class="sourceLineNo">351</span>     * @return The data area.<a name="line.351"></a>
<span class="sourceLineNo">352</span>     */<a name="line.352"></a>
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<span class="sourceLineNo">355</span>        Rectangle2D result;<a name="line.355"></a>
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<span class="sourceLineNo">369</span>    /**<a name="line.369"></a>
<span class="sourceLineNo">370</span>     * Return {@code true} to indicate the canvas is resizable.<a name="line.370"></a>
<span class="sourceLineNo">371</span>     * <a name="line.371"></a>
<span class="sourceLineNo">372</span>     * @return {@code true}. <a name="line.372"></a>
<span class="sourceLineNo">373</span>     */<a name="line.373"></a>
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<span class="sourceLineNo">375</span>    public boolean isResizable() {<a name="line.375"></a>
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<span class="sourceLineNo">380</span>     * Sets the tooltip text, with the (x, y) location being used for the<a name="line.380"></a>
<span class="sourceLineNo">381</span>     * anchor.  If the text is {@code null}, no tooltip will be displayed.<a name="line.381"></a>
<span class="sourceLineNo">382</span>     * This method is intended for calling by the {@link TooltipHandlerFX}<a name="line.382"></a>
<span class="sourceLineNo">383</span>     * class, you won't normally call it directly.<a name="line.383"></a>
<span class="sourceLineNo">384</span>     * <a name="line.384"></a>
<span class="sourceLineNo">385</span>     * @param text  the text ({@code null} permitted).<a name="line.385"></a>
<span class="sourceLineNo">386</span>     * @param x  the x-coordinate of the mouse pointer.<a name="line.386"></a>
<span class="sourceLineNo">387</span>     * @param y  the y-coordinate of the mouse pointer.<a name="line.387"></a>
<span class="sourceLineNo">388</span>     */<a name="line.388"></a>
<span class="sourceLineNo">389</span>    public void setTooltip(String text, double x, double y) {<a name="line.389"></a>
<span class="sourceLineNo">390</span>        if (text != null) {<a name="line.390"></a>
<span class="sourceLineNo">391</span>            if (this.tooltip == null) {<a name="line.391"></a>
<span class="sourceLineNo">392</span>                this.tooltip = new Tooltip(text);<a name="line.392"></a>
<span class="sourceLineNo">393</span>                Tooltip.install(this, this.tooltip);<a name="line.393"></a>
<span class="sourceLineNo">394</span>            } else {<a name="line.394"></a>
<span class="sourceLineNo">395</span>                this.tooltip.setText(text);           <a name="line.395"></a>
<span class="sourceLineNo">396</span>                this.tooltip.setAnchorX(x);<a name="line.396"></a>
<span class="sourceLineNo">397</span>                this.tooltip.setAnchorY(y);<a name="line.397"></a>
<span class="sourceLineNo">398</span>            }                   <a name="line.398"></a>
<span class="sourceLineNo">399</span>        } else {<a name="line.399"></a>
<span class="sourceLineNo">400</span>            Tooltip.uninstall(this, this.tooltip);<a name="line.400"></a>
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<span class="sourceLineNo">405</span>    /**<a name="line.405"></a>
<span class="sourceLineNo">406</span>     * Handles a mouse pressed event by (1) selecting a live handler if one<a name="line.406"></a>
<span class="sourceLineNo">407</span>     * is not already selected, (2) passing the event to the live handler if<a name="line.407"></a>
<span class="sourceLineNo">408</span>     * there is one, and (3) passing the event to all enabled auxiliary <a name="line.408"></a>
<span class="sourceLineNo">409</span>     * handlers.<a name="line.409"></a>
<span class="sourceLineNo">410</span>     * <a name="line.410"></a>
<span class="sourceLineNo">411</span>     * @param e  the mouse event.<a name="line.411"></a>
<span class="sourceLineNo">412</span>     */<a name="line.412"></a>
<span class="sourceLineNo">413</span>    private void handleMousePressed(MouseEvent e) {<a name="line.413"></a>
<span class="sourceLineNo">414</span>        if (this.liveHandler == null) {<a name="line.414"></a>
<span class="sourceLineNo">415</span>            for (MouseHandlerFX handler: this.availableMouseHandlers) {<a name="line.415"></a>
<span class="sourceLineNo">416</span>                if (handler.isEnabled() &amp;&amp; handler.hasMatchingModifiers(e)) {<a name="line.416"></a>
<span class="sourceLineNo">417</span>                    this.liveHandler = handler;      <a name="line.417"></a>
<span class="sourceLineNo">418</span>                }<a name="line.418"></a>
<span class="sourceLineNo">419</span>            }<a name="line.419"></a>
<span class="sourceLineNo">420</span>        }<a name="line.420"></a>
<span class="sourceLineNo">421</span>        <a name="line.421"></a>
<span class="sourceLineNo">422</span>        if (this.liveHandler != null) {<a name="line.422"></a>
<span class="sourceLineNo">423</span>            this.liveHandler.handleMousePressed(this, e);<a name="line.423"></a>
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<span class="sourceLineNo">425</span>        <a name="line.425"></a>
<span class="sourceLineNo">426</span>        // pass on the event to the auxiliary handlers<a name="line.426"></a>
<span class="sourceLineNo">427</span>        for (MouseHandlerFX handler: this.auxiliaryMouseHandlers) {<a name="line.427"></a>
<span class="sourceLineNo">428</span>            if (handler.isEnabled()) {<a name="line.428"></a>
<span class="sourceLineNo">429</span>                handler.handleMousePressed(this, e);<a name="line.429"></a>
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<span class="sourceLineNo">432</span>    }<a name="line.432"></a>
<span class="sourceLineNo">433</span>    <a name="line.433"></a>
<span class="sourceLineNo">434</span>    /**<a name="line.434"></a>
<span class="sourceLineNo">435</span>     * Handles a mouse moved event by passing it on to the registered handlers.<a name="line.435"></a>
<span class="sourceLineNo">436</span>     * <a name="line.436"></a>
<span class="sourceLineNo">437</span>     * @param e  the mouse event.<a name="line.437"></a>
<span class="sourceLineNo">438</span>     */<a name="line.438"></a>
<span class="sourceLineNo">439</span>    private void handleMouseMoved(MouseEvent e) {<a name="line.439"></a>
<span class="sourceLineNo">440</span>        if (this.liveHandler != null &amp;&amp; this.liveHandler.isEnabled()) {<a name="line.440"></a>
<span class="sourceLineNo">441</span>            this.liveHandler.handleMouseMoved(this, e);<a name="line.441"></a>
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<span class="sourceLineNo">443</span>        <a name="line.443"></a>
<span class="sourceLineNo">444</span>        for (MouseHandlerFX handler: this.auxiliaryMouseHandlers) {<a name="line.444"></a>
<span class="sourceLineNo">445</span>            if (handler.isEnabled()) {<a name="line.445"></a>
<span class="sourceLineNo">446</span>                handler.handleMouseMoved(this, e);<a name="line.446"></a>
<span class="sourceLineNo">447</span>            }<a name="line.447"></a>
<span class="sourceLineNo">448</span>        }<a name="line.448"></a>
<span class="sourceLineNo">449</span>    }<a name="line.449"></a>
<span class="sourceLineNo">450</span><a name="line.450"></a>
<span class="sourceLineNo">451</span>    /**<a name="line.451"></a>
<span class="sourceLineNo">452</span>     * Handles a mouse dragged event by passing it on to the registered <a name="line.452"></a>
<span class="sourceLineNo">453</span>     * handlers.<a name="line.453"></a>
<span class="sourceLineNo">454</span>     * <a name="line.454"></a>
<span class="sourceLineNo">455</span>     * @param e  the mouse event.<a name="line.455"></a>
<span class="sourceLineNo">456</span>     */<a name="line.456"></a>
<span class="sourceLineNo">457</span>    private void handleMouseDragged(MouseEvent e) {<a name="line.457"></a>
<span class="sourceLineNo">458</span>        if (this.liveHandler != null &amp;&amp; this.liveHandler.isEnabled()) {<a name="line.458"></a>
<span class="sourceLineNo">459</span>            this.liveHandler.handleMouseDragged(this, e);<a name="line.459"></a>
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<span class="sourceLineNo">461</span>        <a name="line.461"></a>
<span class="sourceLineNo">462</span>        // pass on the event to the auxiliary handlers<a name="line.462"></a>
<span class="sourceLineNo">463</span>        for (MouseHandlerFX handler: this.auxiliaryMouseHandlers) {<a name="line.463"></a>
<span class="sourceLineNo">464</span>            if (handler.isEnabled()) {<a name="line.464"></a>
<span class="sourceLineNo">465</span>                handler.handleMouseDragged(this, e);<a name="line.465"></a>
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<span class="sourceLineNo">469</span><a name="line.469"></a>
<span class="sourceLineNo">470</span>    /**<a name="line.470"></a>
<span class="sourceLineNo">471</span>     * Handles a mouse released event by passing it on to the registered <a name="line.471"></a>
<span class="sourceLineNo">472</span>     * handlers.<a name="line.472"></a>
<span class="sourceLineNo">473</span>     * <a name="line.473"></a>
<span class="sourceLineNo">474</span>     * @param e  the mouse event.<a name="line.474"></a>
<span class="sourceLineNo">475</span>     */<a name="line.475"></a>
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<span class="sourceLineNo">480</span>        <a name="line.480"></a>
<span class="sourceLineNo">481</span>        // pass on the event to the auxiliary handlers<a name="line.481"></a>
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<span class="sourceLineNo">483</span>            if (handler.isEnabled()) {<a name="line.483"></a>
<span class="sourceLineNo">484</span>                handler.handleMouseReleased(this, e);<a name="line.484"></a>
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<span class="sourceLineNo">489</span>    /**<a name="line.489"></a>
<span class="sourceLineNo">490</span>     * Handles a mouse released event by passing it on to the registered <a name="line.490"></a>
<span class="sourceLineNo">491</span>     * handlers.<a name="line.491"></a>
<span class="sourceLineNo">492</span>     * <a name="line.492"></a>
<span class="sourceLineNo">493</span>     * @param e  the mouse event.<a name="line.493"></a>
<span class="sourceLineNo">494</span>     */<a name="line.494"></a>
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<span class="sourceLineNo">499</span><a name="line.499"></a>
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<span class="sourceLineNo">502</span>            if (handler.isEnabled()) {<a name="line.502"></a>
<span class="sourceLineNo">503</span>                handler.handleMouseClicked(this, e);<a name="line.503"></a>
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<span class="sourceLineNo">505</span>        }<a name="line.505"></a>
<span class="sourceLineNo">506</span>    }<a name="line.506"></a>
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<span class="sourceLineNo">508</span>    /**<a name="line.508"></a>
<span class="sourceLineNo">509</span>     * Handles a scroll event by passing it on to the registered handlers.<a name="line.509"></a>
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<span class="sourceLineNo">511</span>     * @param e  the scroll event.<a name="line.511"></a>
<span class="sourceLineNo">512</span>     */<a name="line.512"></a>
<span class="sourceLineNo">513</span>    protected void handleScroll(ScrollEvent e) {<a name="line.513"></a>
<span class="sourceLineNo">514</span>        if (this.liveHandler != null &amp;&amp; this.liveHandler.isEnabled()) {<a name="line.514"></a>
<span class="sourceLineNo">515</span>            this.liveHandler.handleScroll(this, e);<a name="line.515"></a>
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<span class="sourceLineNo">517</span>        for (MouseHandlerFX handler: this.auxiliaryMouseHandlers) {<a name="line.517"></a>
<span class="sourceLineNo">518</span>            if (handler.isEnabled()) {<a name="line.518"></a>
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<span class="sourceLineNo">524</span>    /**<a name="line.524"></a>
<span class="sourceLineNo">525</span>     * Receives a notification from the chart that it has been changed and<a name="line.525"></a>
<span class="sourceLineNo">526</span>     * responds by redrawing the chart entirely.<a name="line.526"></a>
<span class="sourceLineNo">527</span>     * <a name="line.527"></a>
<span class="sourceLineNo">528</span>     * @param event  event information. <a name="line.528"></a>
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<span class="sourceLineNo">536</span>        double x = point.getX();<a name="line.536"></a>
<span class="sourceLineNo">537</span>        double y = point.getY();<a name="line.537"></a>
<span class="sourceLineNo">538</span>        ChartEntity entity = this.info.getEntityCollection().getEntity(x, y);<a name="line.538"></a>
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<span class="sourceLineNo">547</span>        double y = point.getY();<a name="line.547"></a>
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<span class="sourceLineNo">551</span>            listener.chartMouseClicked(event);<a name="line.551"></a>
<span class="sourceLineNo">552</span>        }<a name="line.552"></a>
<span class="sourceLineNo">553</span>    }<a name="line.553"></a>
<span class="sourceLineNo">554</span>}<a name="line.554"></a>
<span class="sourceLineNo">555</span><a name="line.555"></a>




























































</pre>
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